Hi me again. Beginning to think ze Germans are still at war with us by fooling us into thinking their cars are well made My lads golf heater fan isn’t great works and then doesn’t and it’s noisy Is the fan motor perhaps is it An easy fix
I replaced mine in my old B5 Passat which lived behind the glove box after it had the same symptoms. About £30 for the part and a lot of patience to get the old motor out and squeeze the new motor in.
Try google and there may be some how to instructions.